Liquid level sensor



FIG. 1 is a front elevational view of a first embodiment of a liquid level sensor embodying my new design;

FIG. 2 is a right side elevational view of the liquid level sensor embodiment of FIG. 1, which is a mirror image of the left side elevational view thereof;

FIG. 3 is a rear elevational view of the liquid level sensor embodiment of FIG. 1;

FIG. 4 is a top plan view of the liquid level sensor embodiments of FIGS. 1, 6, 9, 12, 14 and 17;

FIG. 5 is a bottom plan view of the liquid level sensor embodiments of FIGS. 1 and 6;

FIG. 6 is a front elevational view of a second embodiment of a liquid level sensor embodying my new design;

FIG. 7 is a right side elevational view of the liquid level sensor embodiment of FIG. 6, which is a mirror image of the left side elevational view thereof;

FIG. 8 is a rear elevational view of the liquid level sensor embodiment of FIG. 6;

FIG. 9 is a front elevational view of a third embodiment of a liquid level sensor embodying my new design, which is identical to the rear elevational view thereof;

FIG. 10 is a right side elevational view of the liquid level sensor embodiment of FIG. 9, which is identical to the left side elevational view thereof;

FIG. 11 is a bottom plan view of the liquid level sensor embodiments of FIGS. 9 and 12;

FIG. 12 is a front elevational view of a fourth embodiment of a liquid level sensor embodying my new design, which is identical to the rear elevational view thereof;

FIG. 13 is a right side elevational view of the liquid level sensor embodiment of FIG. 12, which is identical to the left side elevational view thereof;

FIG. 4 is a front elevational view of a fifth embodiment of a liquid level sensor embodying my new design, which is identical to the rear elevational view thereof;

FIG. 15 is a right side elevational view of the liquid level sensor embodiment of FIG. 14, which is identical to the left side elevational view thereof;

FIG. 16 is a bottom plan view of the liquid level sensor embodiments of FIGS. 14 and 17;

FIG. 17 is a front elevational view of a sixth embodiment of a liquid level sensor embodying my new design, which is identical to the rear elevational view thereof; and,

FIG. 18 is a right side elevational view of the liquid level sensor embodiment of FIG. 17, which is identical to the left side elevational view thereof. 

The ornamental design for a liquid level sensor, as shown and described. 